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DFARS Specialty Metals
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Grinding Cones for Straight Grinders
 |  |  |  |  |
Style 1 | Style 2 | Style 3 | Style 4 | Style 5 |
Longer lasting than grinding bits, these abrasive cones remove heavy amounts of material and leave a rough surface texture. They have a threaded insert that attaches to the spindle on a straight grinder. Use in corners and inside castings.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
Aluminum Oxide Abrasive—For use on steel, aluminum oxide is the most common abrasive used in grinding metals.
Zirconia Alumina Abrasive—For use on steel and stainless steel, zirconia alumina grinds faster and lasts longer than aluminum oxide.
Head Diameter—Head diameter is measured at the widest point.
Head | Abrasive | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Dia. | Lg. | Arbor Hole Thread Size | Max. Rotation Speed, rpm | Shape | Material | Bond Material | Choose a Grit (Surface Texture) | Each | |||
For Steel | ||||||||||||
| 1 | 2" | 3" | 5/8"-11 | 18,144 | Cylinder | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A67 | 000000 | ||
| 1 | 2" | 4" | 5/8"-11 | 18,144 | Cylinder | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A69 | 00000 | ||
| 2 | 2" | 4" | 5/8"-11 | 18,144 | Barrel | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A76 | 00000 | ||
| 3 | 2" | 3" | 5/8"-11 | 18,144 | Barrel | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A56 | 00000 | ||
| 4 | 2" | 4" | 5/8"-11 | 18,144 | Taper | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A61 | 00000 | ||
| 5 | 2" | 4" | 5/8"-11 | 18,144 | Taper | Aluminum Oxide | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A78 | 00000 | ||
For Steel and Stainless Steel | ||||||||||||
| 1 | 2" | 3" | 5/8"-11 | 18,144 | Cylinder | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A68 | 00000 | ||
| 1 | 2" | 4" | 5/8"-11 | 18,144 | Cylinder | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A71 | 00000 | ||
| 2 | 2" | 4" | 5/8"-11 | 18,144 | Barrel | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A77 | 00000 | ||
| 3 | 2" | 3" | 5/8"-11 | 18,144 | Barrel | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A57 | 00000 | ||
| 4 | 2" | 4" | 5/8"-11 | 18,144 | Taper | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A62 | 00000 | ||
| 5 | 2" | 4" | 5/8"-11 | 18,144 | Taper | Zirconia Alumina | Synthetic Resin | 16 (Rough) Gray-Brown, 24 (Rough) Gray-Brown | 8732A79 | 00000 | ||
Grinding Bits for Metals
 |
Style 1 |
Made of aluminum oxide, these bits are well suited for use on most metals and materials that are not heat sensitive.
Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
Cylinder
|
Style 1 |
Head | Abrasive | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Dia. | Lg. | Max. Rotation Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Choose a Grit (Surface Texture) | Pkg. Qty. | Pkg. | |||
For Steel | |||||||||||||
1/4" Diameter Shank | |||||||||||||
| 1 | 2" | 2" | 11,750 | W244 | Aluminum Oxide | Vitrified Ceramic | 1 1/2" | 60 (Rough) Blue | 1 | 4522A357 | 00000 | ||
For Steel, Stainless Steel, and Iron | |||||||||||||
1/4" Diameter Shank | |||||||||||||
| 1 | 2" | 1" | 19,100 | W242 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray, 60 (Rough) Orange, 120 (Smooth) Blue | 5 | 4522A249 | 00000 | ||
Rubber-Cushioned Abrasive Grinding Bits for Metals
 |
Style 1 |
The abrasive grains in these bits are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits. Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
Cylinder
|
Style 1 |
For Steel—Bits for steel are aluminum oxide, which is the most common abrasive used in grinding metal.
For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
Head | Abrasive | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Dia. | Lg. | Max. Rotation Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Choose a Grit (Surface Texture) | Each | |||
For Steel | ||||||||||||
1/4" Diameter Shank | ||||||||||||
| 1 | 2" | 1" | 19,100 | W242 | Aluminum Oxide | Rubber | 1 1/2" | 46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red | 4919A571 | 000000 | ||
For Aluminum, Brass, and Bronze | ||||||||||||
1/4" Diameter Shank | ||||||||||||
| 1 | 2" | 1" | 19,100 | W242 | Silicon Carbide | Rubber | 1 1/2" | 46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red | 4919A866 | 00000 | ||
Grinding Bits for Stainless Steel
 |
Style 1 |
Bits are specially formulated to stay cool during grinding, so they won’t mar or discolor stainless steel. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
Cylinder
|
Style 1 |
Head | Abrasive | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Dia. | Lg. | Max. Rotation Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Each | |||
For Stainless Steel | ||||||||||||
1/4" Diameter Shank | ||||||||||||
| 1 | 2" | 1" | 19,100 | W242 | Aluminum Oxide | Vitrified Ceramic | 1 1/2" | 60 (Rough) Pink | 44005A42 | 00000 | ||
Rubber-Cushioned Abrasive Grinding Bits without Shank for Metals
 |
Style 5 |
Bits attach to shanks so you can quickly switch head shapes without removing the shank. The abrasive grains are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits.
Bits are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup. Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
Cylinder
|
Style 5 |
Bits | Wheel Arbors | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Abrasive | ||||||||||||
Style | Dia. | Lg. | Arbor Hole Size | Max. Rotation Speed, rpm | Material | Bond Material | Choose a Grit (Surface Texture) | Each | Each | ||||
For Steel, Aluminum, Brass, and Bronze | |||||||||||||
| 5 | 2" | 3/8" | 1/4" | 10,500 | Aluminum Oxide/Silicon Carbide Blend | Rubber | 46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue | 4824A82 | 000000 | 4770A11 | 000000 | ||
